All plant and animal groups existing together and the physical factors with which they interact compose an ecosystem<span>.</span>
The answer is actually <u>true</u><u>.</u>
The starting point of all rivers is higher than their end point. However, under the right conditions, small amounts of water can be drawn upwards, against the tug of gravity, through a phenomenon known as "capillary action". For this to occur, however, the water must be confined into a small flow space.
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